Most Active Cybersecurity Investors in Boston 2026

10 firms writing Cybersecurity checks in Boston, led by Junipero Capital, YL Ventures, Zachary Nelson — ranked by verified deal count with the companies.

Cybersecurity in Boston accounts for 3 tracked companies with verified cap-table data, 3 of which disclose round sizes totalling $492M. The median disclosed raise is $166M, and the largest is Immuta at $260M, ahead of 7AI ($166M) and Grip Security ($66M).

The names that recur most often on these cybersecurity cap tables are NightDragon Security (1 company), Snow Ventures (1 company), Capital Growth (1 company), ycro (1 company), Blu Venture Investors (1 company), Index Ventures (1 company). By latest disclosed round, the market skews Series E (1), Series A (1), Series B (1).

Companies tracked: 3
Disclosed funding total: $492M across 3 companies
Median disclosed raise: $166M
Largest raise: Immuta — $260M
Stage mix: Series E 1 · Series A 1 · Series B 1
Most recent dated round: 2025-02-01

Best funded Cybersecurity in Boston companies

Immuta — $260M (latest: Series E)
7AI — $166M (latest: Series A)
Grip Security — $66M (latest: Series B)

Sector × city funding reports (20)

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